Facile Synthesis of AEI Zeolites by Hydrothermal Conversion of FAU Zeolites in the Presence of Tetraethylphosphonium Cations

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Abstract
Highly crystalline and pure high-silica AEI zeolites with Si/Al ratios of ca. 10–15 were successfully obtained by a one-day hydrothermal conversion of FAU zeolites at 150 °C in tetraethylphosphonium hydroxide media.

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